I've been working on the two most annoying problems for me. Battery drain and the problem where at the end of a call sometimes the screen would stay black and the phone would freeze. I was over on XDA going through the InCall Screen Tweak thread. For those that may not know, this app is cooked in and controls power and screen function during a call. Reading through the thread, some users were commenting on extreme battery drain with this app. Same rate as most of us. They also were having issues with the end of call lock ups. Here is what I came across and it seemed to have fixed both my problems. Although I have only tested for about 4 hours.
I was seeing at least 10% battery drain an hour before this reg edit. After, I am down to what I remember as a normal 1-2%. I tried the reg edit 3 times back and forth to verify. Also I placed about 25 calls and had no end of call lock ups
It seems way too simple, but maybe someone else can give it a try to verify. I'm hoping for good extended results.
Here is a link to page 71 of the thread where one user had done extensive testing on battery drain while using this app and this reg edit. Previous pages (69) also contain good battery drain discussions. Overall the thread is great and the developer looks to be very responsive. He suggested: Those people that are experiencing excessive power usage, can you do me a favour and rename the Touch_InCall_Screen_Tweak.exe in your windows folder to something else. This will prevent TICST from operating properly, but will indicate whether the power drain is something other than it running.
http://forum.xda-developers.com/show...488991&page=71
And here is the reg edit:
HKLM\Software\HTC\PHONE\FaceDownMuteRing
change to 0